Dynamic Pulse-Positioning for a Single-Stage Isolated AC-DC Converter
Bibliographic record
Abstract
The control of a grid connected single-stage isolated ac-dc converter is presented where the transformer power flow occurs at high frequency where the transformer primary has both low and high frequency current components. The converter primary, used to control the low frequency grid current, creates a high frequency transformer switch mode voltage pattern whose pulse widths are determined by the instantaneous modulation index used by the primary side converter to control the grid current. The secondary side converter matches the primary side transformer voltage switching patterns and introduces a custom cycle-by-cycle phase shift to control the high frequency power flow between the transformer primary and secondary windings. This coordination of pwm pulses is done in such a way as to lower the flow of high frequency reactive currents when compared to using a standard phase shift control approach. Hence, the rms of the high frequency currents are lowered together with their associated conduction losses. The operation of the transformer isolating converter is verified with simulations and experimental results using a 2.2kW prototype converter.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".